{"id": 2638, "prediction_verbatim": "10Y Treasury yield stays below 4.35% over next 48h (safe-haven bid persists absent de-escalation)", "created_at": "2026-04-03 18:09:59", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 18:14:14", "chain_hash": "91ebc33692e0890e78f00cd9ebda5d2ac833684fbace749cc40c15f206b3ad71", "chain_tx": "4yDFsthzgnF71bpF85d2NTixkfy96SW7FYSvYMC4kfqhoXJsd248Vnw7MXYzTbMQ4TWutDmEwEpu5mCPhFWeFgif", "verify": "sha256(f'{prediction_verbatim}|{created_at}|{id}') must equal chain_hash, and the Solana tx memo must read 'workshop:pred:<id>:<chain_hash>' with a timestamp BEFORE resolved_at. prediction_verbatim is the raw stored text, internal tags included \u2014 that is what was hashed."}